Corner support



FIG. 1 is a perspective view of the corner support showing my new design, the broken lines showing walls and a straight piece are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is the opposite side elevational view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a corner support, as shown and described. 